When ever I order supplements, I always do my calculations to see which brand gives the most active ingredient per $ spent, and this is it (at least in Oct prices).
Does it work? Who knows. Unlike the 7-keto, there's no noticeable body feeling, and I certainly haven't lost any fat. Mind you, I only take 1 pill per day, which is lower than the suggested dose for fat loss.
There is some worry about recent research which linked L-carnitine to heart atacks...

TO GET BACK TO BEING MYSELF AFTER HAVING A STROKE, ALONG WITH ALPHA LIPOIC ACID 600 MGS. I TAKE BOTH OF THESE NIGHTLY, AT ONE TIME I DIDN'T THINK THEY WERE DOING ANYTHING FOR ME SO I STOPPED TAKING THEM, BUT I DISCOVERED I WAS VERY MUDDLED IN MY THINKING WITHOUT THEM. SO HERE I AM TAKING BOTH NIGHTLY WITHOUT FAIL.

I changed to this acetyl l-carnitine after previously taking the Doctor's Best brand. I'm going to change back because I didn't seem to tolerate this one too well. I think it was probably the added B6.